Research on vibration employed for the train traffic control

The paper presents extended abstract on preliminary research on vibration employed for the trains traffic control. The research was conducted on experimental rail track with typical level crossing devices. The results present 3-axle distribution of vibration generated by the train simulator wheel-rail contact. For the sake of the numerical analysis of magnitude of the vibration the basic statistics have been calculated. The Fourier transformations of the signals presents the dominant frequency bands

Measurement and mathematical function of the actuation force of the rail switch drive

The paper presents results of measuring the force of the adjustment of the rail switch drive by spindle. The actuation force is the maximum force with which setting valve of the drive done to change position of the point. The simulation research requires proper mathematical model of the actuation force of the rail switch drive. Thus, the verification of such model requires real data measured on real object. The paper presents results of measurement and method of real data analysis

Research on rail vibration of passing trains

The paper presents extended abstract on research on rail vibration caused by passing train. The purpose of the investigation was analysis of information capacity of vibration signal in case of different types of railway vehicles. The research was conducted on real rail track with regular operational environment. The measurement system consisted of three 3-axial vibration acceleration sensors and a data-acquisition device registering continuous waveforms of signals. The result analysis present shapes of the signals for separate periods and as comparison for different rail vehicles

Network-on-Multi-Chip (NoMC) with Monitoring and Debugging Support, Journal of Telecommunications and Information Technology, 2011, nr 3

This paper summarizes recent research on network-on-multi-chip (NoMC) at Poznań University of Technology. The proposed network architecture supports hierarchical addressing and multicast transition mode. Such an approach provides new debugging functionality hardly attainable in classical hardware testing methodology. A multicast transmission also enables real-time packet monitoring. The introduced features of NoC network allow to elaborate a model of hardware video codec that utilizes distributed processing on many FPGAs. Final performance of the designed network was assessed using a model of AVC coder and multi-FPGA platforms. In such a system, the introduced multicast transmission mode yields overall gain of bandwidth up to 30%. Moreover, synthesis results show that the basic network components designed in Verilog language are suitable and easily synthesizable for FPGA devices

Defining a novel domain that provides an essential contribution to site-specific interaction of Rep protein with DNA

15 p.-6 fig.An essential feature of replication initiation proteins is their ability to bind to DNA. In this work, we describe a new domain that contributes to a replication initiator sequence-specific interaction with DNA. Applying biochemical assays and structure prediction methods coupled with DNA-protein crosslinking, mass spectrometry, and construction and analysis of mutant proteins, we identified that the replication initiator of the broad host range plasmid RK2, in addition to two winged helix domains, contains a third DNA-binding domain. The phylogenetic analysis revealed that the composition of this unique domain is typical within the described TrfA-like protein family. Both in vitro and in vivo experiments involving the constructed TrfA mutant proteins showed that the newly identified domain is essential for the formation of the protein complex with DNA, contributes to the avidity for interaction with DNA, and the replication activity of the initiator. The analysis of mutant proteins, each containing a single substitution, showed that each of the three domains composing TrfA is essential for the formation of the protein complex with DNA. Furthermore, the new domain, along with the winged helix domains, contributes to the sequence specificity of replication initiator interaction within the plasmid replication origin.National Science Centre [2012/04/A/NZ1/00048 to I.K.;2017/26/D/NZ1/00239 to K.W.]; Foundation for Polish Science [TEAM, POIR.04.04.00-00-5C75/17-00 to I.K.]; International Institute of Molecular and Cell Biology in Warsaw (to J.M.B.); Ministerio de Economía,Industria y Competitividad (MINECO/AEI) [BIO2012-30852, RTI2018-094549-B-I00 to R.G.]. Funding for open access charge: Foundation for Polish Science [TEAM,POIR.04.04.00-00-5C75/17-00].Peer reviewe

HAIR [dokument dźwiękowy]

Audycja o musicalu "Hair" (premiera w 1968 r. w Nowym Jorku na Broadwayu)

Kariera w centrach usług księgowych BPO i SSC – podobieństwa i różnice w wybranych aspektach

The research aims to investigate the career development of accounting specialists working in Business Process Outsourcing (BPO) and Shared Service Center (SSC) organizations. The study focuses on identi-fying the similarities and differences between career development in selected aspects within those two models of accounting outsourcing. The research was conducted using a questionnaire. The data were obtained from Polish accountants working in BPO and SSC in Cracow and analyzed using both descrip-tive and inferential statistics. We find a range of career development opportunities in accounting SSC and BPO centers. Accountants who focus on promotion, training, and international work environment most often choose job offers among BPO centers, although job satisfaction and work perception are compara-ble in SSC and BPO. Accountants with a higher level of job satisfaction and positive work perception in the current accounting service center stay in the BPO/SSC sector for longer periods.Celem badań prezentowanych w artykule jest analiza kariery specjalistów z rachunkowości zatrudnio-nych w centrach usługowych typu BPO (Business Process Outsourcing) oraz SSC (Shared Service Cen-ters). Uwaga została skoncentrowana na identyfikacji podobieństw i różnic rozwoju kariery w wybranych aspektach, w tych dwóch modelach outsourcingu usług księgowych. Badania zostały przeprowadzone przy wykorzystaniu kwestionariusza ankietowego. Dane pozyskano od polskich księgowych zatrudnio-nych w centrach typu BPO i SSC zlokalizowanych w Krakowie. Na tej podstawie przeprowadzono anali-zę statystyczną, wykorzystując metody statystyki opisowej i matematycznej. Wykazano zróżnicowanie charakterystyk karier w tych dwóch rodzajach centrów. Księgowi zaintereso-wani szybką karierą, szkoleniami oraz pracą w międzynarodowym otoczeniu częściej wybierają zatrudnie-nie w centrach typu BPO. Natomiast poziom satysfakcji i percepcja pracy jest porównywalna w obu ro-dzajach centrów. Interesujące jest spostrzeżenie, że księgowi deklarujący wyższy poziom satysfakcji z pracy oraz pozytywny jej odbiór pozostają w sektorze usług outsourcingu rachunkowości na dłuższy czas